HP LaserJet 4610n - Manual (Page 228)

Environmental specifications
Specification Recommended
Temperature 17 to 25 °C (62.6 to 77 °F)
Humidity 30 to 70 percent relative
humidity (RH)
Altitude 0 to 2600 m (0 to 8530 ft)
216 Appendix D Printer specifications ENWW